3 years ago

How many atoms of Pb are there?

Chemistry

2 answers:

natta225 [31]3 years ago

5 0

Answer:

82, I believe.

Explanation:

Helen [10]3 years ago

3 0

Answer:

Explanation:

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Is this sentence true or false ? hydrogen is considered to be a metal

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It is false, hope this helps!

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Label the figure below with the names of a volcano's parts.

nexus9112 [7]

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7. Pipe

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2 years ago

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What is the molarity of a solution in which 7.1 g of sodium sulfate is dissolved in enough water to make 100. mL of solution?

Sidana [21]

Answer:

0.50 M

Explanation:

Given data

Mass of sodium sulfate (solute): 7.1 g

Volume of solution: 100 mL

Step 1: Calculate the moles of the solute

The molar mass of sodium sulfate is 142.04 g/mol. The moles corresponding to 7.1 grams of sodium sulfate are:

$7.1g \times \frac{1mol}{142.02g} = 0.050mol$

Step 2: Convert the volume of solution to liters

We will use the relation 1 L = 1000 mL.

$100mL \times \frac{1L}{1000mL} =0.100L$

Step 3: Calculate the molarity of the solution

$M = \frac{moles\ of\ solute }{liters\ of\ solution} = \frac{0.050mol}{0.100L} =0.50 M$

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3 years ago

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If the equilibrium concentrations of products are much greater than those of reactants in this system, what would be the magnitu

miss Akunina [59]

Answer:

K > 1.

Explanation:

∵ The equilibrium constant K = [products]/[reactants].

Since, [products] > [reactants].

<em>∴ The equilibrium constant K > 1.</em>

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4 years ago